Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Herzog, Joseph B.; Knight, Mark W.; Natelson, Douglas

doi:10.1021/nl403510u

Cited by 125 publications

(131 citation statements)

References 45 publications

(65 reference statements)

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“…Local temperature increase in the device at the maximum available laser power was previously quantified using a bolometric approach to range from ~10 K at room temperature to ~140 K at low temperature. 30,31 As reported recently, 29 We observe the PTE voltage generated in nanostructures with nanowires shorter than the laser spot size to be qualitatively similar to the behavior observed in single metal thermocouples. 15,16 For longer nanowires, we find extreme spatial variability of the PTE voltage.…”

Section: Introductionsupporting

confidence: 84%

“…1d. Building on previous modeling of the local temperature rise, ∆T, that was previously inferred using a bolometric technique, 30,31 we set up a simplified 2D model in COMSOL Multiphysics to estimate the value of the thermoelectric voltage (see Electronic Supplementary Information (ESI) for details) from a known thermal gradient across the device. The magnitude and spatial dependence of the observed thermoelectric voltage is consistent with the proposed mechanism of width dependent Seebeck coefficient.…”

Section: Resultsmentioning

confidence: 99%

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Substantial local variation of the Seebeck coefficient in gold nanowires

2017

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Nanoscale structuring holds promise to improve thermoelectric properties of materials for energy conversion and photodetection. We report a study of the spatial distribution of the photothermoelectric voltage in thin-film nanowire devices fabricated from single metal. A focused laser beam is used to locally heat the metal nanostructure via a combination of direct absorption and excitation of a plasmon resonance in Au devices. As seen previously, in nanowires shorter than the spot size of the laser, we observe a thermoelectric voltage distribution that is consistent with the local Seebeck coefficient being spatially dependent on the width of the nanostructure. In longer structures, we observe extreme variability of the net thermoelectric voltage as the laser spot is scanned along the length of the nanowire.The sign and magnitude of the thermoelectric voltage is sensitive to the structural defects, metal grain structure, and surface passivation of the nanowire. This finding opens the possibility of improved local control of the thermoelectric properties at the nanoscale.

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Section: Introductionsupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Substantial local variation of the Seebeck coefficient in gold nanowires

2017

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“…Thermo-plasmonics [104][105][106][107] is based on the thermal heating originated by the optically resonant excitation of plasmons in nanoparticles. [108][109][110] Localized surface plasmons (LSPs), i.e., plasmon modes in nanostructures, notably enhance the local electric field near the surface of the nanostructures, so as to achieve an enhanced optical response.…”

confidence: 99%

Optoelectronic devices, plasmonics, and photonics with topological insulators

2017

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Topological insulators are innovative materials with semiconducting bulk together with surface states forming a Dirac cone, which ensure metallic conduction in the surface plane. Therefore, topological insulators represent an ideal platform for optoelectronics and photonics. The recent progress of science and technology based on topological insulators enables the exploitation of their huge application capabilities. Here, we review the recent achievements of optoelectronics, photonics and plasmonics with topological insulators. Plasmonic devices and photodetectors based on topological insulators in a wide energy range, from Terahertz to the ultraviolet, promise outstanding impact. Furthermore, the peculiarities, the range of applications and the challenges of the emerging fields of topological photonics and thermoplasmonics are discussed.

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“…Nanoscale heat engineering: We can take advantage of the heat generation associated with plasmonic losses in some respects. For example, there is growing interest in controlling the temperatures at nanoscale with plasmonic nanostructures, so-called thermal plasmonics [132][133][134][135][136][137]. Under light illumination at plasmonic resonance, the enhanced absorption of plasmonic nanostructure turns into an ideal remotely controllable nanoscale heating source.…”

Section: Perspectivesmentioning

confidence: 99%

Light manipulation with encoded plasmonic nanostructures

2014

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-Plasmonics, which allows for manipulation of light field beyond the fundamental diffraction limit, has recently attracted tremendous research efforts. The propagating surface plasmon polaritons (SPPs) confined on a metal-dielectric interface provide an ideal two-dimensional (2D) platform to develop subwavelength optical circuits for on-chip information processing and communication. The surface plasmon resonance of rationally designed metallic nanostructures, on the other hand, enables pronounced phase and polarization modulation for light beams travelling in three-dimensional (3D) free space. Flexible 2D and free-space propagating light manipulation can be achieved by encoding plasmonic nanostructures on a 2D surface, promising the design, fabrication and integration of the nextgeneration optical architectures with substantially reduced footprint. It is envisioned that the encoded plasmonic nanostructures can significantly expand available toolboxes for novel light manipulation. In this review, we presents the fundamentals, recent developments and future perspectives in this emerging field, aiming to open up new avenues to developing revolutionary photonic devices.

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Thermoplasmonics: Quantifying Plasmonic Heating in Single Nanowires

Cited by 125 publications

References 45 publications

Substantial local variation of the Seebeck coefficient in gold nanowires

Substantial local variation of the Seebeck coefficient in gold nanowires

Optoelectronic devices, plasmonics, and photonics with topological insulators

Light manipulation with encoded plasmonic nanostructures

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